To unlock new customization options for Franklin, Michael, and Trevor, go to Rockstar's LifeInvader social network and click the "Stalk" button on the page. Sign into LifeInvader with your Social Club name and password. Different pages will randomly appear after refreshing. Click the "Stalk" button on each one to unlock something new for use in GTA 5. To unlock new haircuts for the three, go to Herr Kutz Barber and click the "Stalk" button.